LNU2H332MSEGBB

The LNU2H332MSEGBB is a screw‑terminal aluminum electrolytic capacitor designed for high‑voltage industrial power applications. It is a polarized, radial can device engineered to support inverter circuitry and high‑frequency regenerative voltage environments.

Key attributes include a 3.3 mF capacitance, 500 V DC rated voltage, operation from −40 °C to +105 °C, and a load life of 5000 hours at 105 °C under rated ripple current. Its compact, high‑voltage form factor is targeted at industrial power supplies, AC servomotor regenerative circuits, and general inverter systems.

Key Features

• Capacitance & Tolerance — 3.3 mF nominal capacitance with ±20% tolerance (120 Hz, 20 °C), suitable for bulk energy storage in power circuits.
• High DC Voltage Rating — Rated for 500 V DC; part of a series rated up to DC525 V to address high‑voltage bus requirements.
• Wide Temperature Range — Operational from −40 °C to +105 °C for elevated‑temperature industrial environments.
• High Ripple Current Capability — Handles 10.9 A at 120 Hz and 15.26 A at 10 kHz, supporting continuous ripple loads in inverter and power‑conversion circuits.
• Long Elevated‑Temperature Life — 5000 hours load life at 105 °C with rated ripple current applied, maintaining capacitance, tan δ and leakage within specified limits after endurance testing.
• Screw Terminal, Radial Can Package — Robust screw‑terminal mounting for secure electrical and mechanical connections in power assemblies; radial can package with supplied bracket hardware.
• Charge–Discharge Endurance — Qualified for extended charge–discharge cycling (datasheet notes endurance testing up to 50 million cycles under specified conditions).
• Insulation & Dielectric Integrity — Insulation resistance more than 100 MΩ at DC 500 V between terminal and bracket and voltage proof of AC 2500 V for 1 minute, with controlled leakage current limits.
• RoHS Compliant — Conforms to RoHS directive (2011/65/EU, (EU)2015/863).

Typical Applications

• Industrial Inverter Power Supplies — Bulk energy storage and smoothing for inverter DC buses where high voltage and thermal endurance are required.
• Regenerative Drives for AC Servomotors — Handles high‑frequency regenerative voltage and high‑speed charge/discharge demands in motor drive systems.
• General Inverter Systems — Suited to inverter topologies needing compact, high‑voltage capacitors with strong ripple tolerance and long life at elevated temperature.
• Power Electronics Modules — Use in power converters and energy‑recapture circuits where secure screw‑terminal connections and high dielectric strength are important.

Unique Advantages

• High‑Voltage, Compact Design: Provides 500 V DC rating in a smaller footprint compared to larger series variants, enabling denser power assemblies.
• Designed for Elevated Temperatures: Rated to +105 °C with a 5000‑hour load life under ripple, delivering predictable performance in hot industrial enclosures.
• Robust Ripple and Cycling Capability: High ripple current ratings and charge–discharge endurance support demanding inverter/regenerative workloads without frequent replacement.
• Screw‑Terminal Reliability: Screw terminals provide secure electrical and mechanical connections for heavy‑current applications and simplify field wiring.
• Clear Electrical Safety Characteristics: Defined insulation resistance, voltage‑proof and leakage current limits help simplify risk assessment for high‑voltage designs.
• Regulatory Compliance: RoHS compliance supports deployment in regulated industrial equipment.

Why Choose LNU2H332MSEGBB?

The LNU2H332MSEGBB combines high DC voltage capability, elevated‑temperature endurance, and high ripple handling in a screw‑terminal aluminum electrolytic package tailored for industrial power electronics. It is well suited for designers developing inverter power supplies, regenerative motor drives, and other high‑voltage power modules that require compact energy storage with reliable long‑term performance.

As part of Nichicon’s LNU series, this capacitor provides defined insulation and endurance characteristics that help reduce design uncertainty and support robust system operation over extended duty cycles.

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